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Signed-off-by: Sathishkumar S <[email protected]>
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| <title>Sathish</title> | ||
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| <h1> Sathishkumar S </h1> | ||
| <h2> Staff Engineer, AMD </h2> | ||
| <h2> Open Source Graphics Multimedia</h2> | ||
| <h2> [email protected] </h2> | ||
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| <div class="griditem-three"></div> | ||
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| <br> | ||
| I am a software developer with 14 years experience in Linux driver development for devices that can broadly be classified into multimedia/gpu/camera and automative specific domains. I currently work at AMD for open-source graphics multimedia drivers which spans across kernel and user-mode drivers. My current interests are understanding image and video codecs that aid my work in driver development for image/video decode with hardware acceleration and I also specialize in measuring and benchmarking performance metrics for hardware accelerated video/image decode from Linux applications and correlating the results with device specification for maximum performance from GPUs including HPC variants like AMD Instinct MI100, MI300 etc. I also like understanding and learning transform theory, DCT-II, huffman/arithmetic coding, ADST, they augment my understanding on codecs. That's about me. | ||
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| <h2> Open-Source Contributions </h2> | ||
| <ul style="list-style-type:circle,padding-left:60px"> | ||
| <li><a href="https://gitlab.freedesktop.org/mesa/mesa/-/commits/main?search=Sathishkumar+S"> Mesa contributions related to jpeg features </a></li> | ||
| <li><a href="https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/?h=v6.10-rc5&qt=author&q=Sathishkumar+S"> Linux kernel contributions in amdgpu </a></li> | ||
| <li><a href="https://github.com/intel/libva/pull/721"> VAAPI MR for Libva support for ROI-crop and format conversion </a></li> | ||
| <li><a href="https://gitlab.freedesktop.org/mesa/drm/-/commits/main?search=Sathishkumar+S"> libdrm amdgpu test for jpeg and contributions in vcn test </a></li> | ||
| <li><a href="https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commits/master?search=Sathishkumar+S"> amdgpu igt test changes</a></li> | ||
| <li><a href="https://github.com/sathishm8/"> my github repo</a></li> | ||
| </ul> | ||
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| <h2> Linux Multimedia and V4L2 </h2> | ||
| <ul style="list-style-type:circle,padding-left:60px"> | ||
| <li>Solid understanding of JPEG specification</li> | ||
| <li>mesa support for hardware accelerated roi crop and format conversion in jpeg ip</li> | ||
| <li>mesa support for jpeg decode of YUV444, YUV440 and Grayscale pixel foramts</li> | ||
| <li>mesa support for mjpeg multi-instance decode on multicore jpeg ip hardware </li> | ||
| <li>Pre-silicon emulation experience for JPEG kernel driver</li> | ||
| <li>Post-silicon JPEG ip bringup and kernel driver development</li> | ||
| <li>C++ ffmpeg based application to measure and benchmark hardware decode performance</li> | ||
| <li>Automation tests for hardware decode and encode on vcn with vmaf score and ffmpeg psnr score for validation</li> | ||
| <li>Good understanding of VP9 codec specification</li> | ||
| <li>Good understanding of CVBS video standards (NTSC/PAL) digital video converters (ITU-BT656)</li> | ||
| <li>Development of v4l2 out driver to stream data to an audio-video-bridge with cache coherence</li> | ||
| <li>Extensive experience in linux driver development for TVP5158 and ADV7180</li> | ||
| <li>Development of v4l2-subdev i2c-client drivers for camera sensors and digital video converters </li> | ||
| <li>Customer demo preparation for early camera on OrinocoIMX6DL (u-boot + kernel + userspace in 1.8s)</li> | ||
| </ul> | ||
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| <h2> Linux Platform and Peripheral Drivers </h2> | ||
| <ul style="list-style-type:circle,padding-left:60px"> | ||
| <li>Multiple bring-up experience on IMX6DL, ExynosAuto9, MT2712</li> | ||
| <li>Understanding of pin-mux, pad-configuration and peripheral ips on Soc</li> | ||
| <li>Boot sequence in SoC, early init requirements and device initialization</li> | ||
| <li>Excellent understanding of UART IP in SoC with hardware flow control and DMA</li> | ||
| <li>Identification of hardware bug in uart ip and demonstrations to ip team</li> | ||
| <li>Good in reading hardware schematics/views for drivers, bring-up and debug</li> | ||
| <li>Comfortable with oscilloscope and logic analyzer for debugging uart, i2c, spi, gpio</li> | ||
| <li>Serdes drivers for display applications using TI Serdes (DS90UB927/DS90UH941)</li> | ||
| <li>Serdes driver for Maxim GMSL MAX9277</li> | ||
| <li>Identification of hardware bug in serdes display IC and demonstration to Vendor</li> | ||
| <li>Extensive experience in debugging i2c communication failures over serdes links</li> | ||
| <li>Driver development and bring-up of remote display panels over serdes setup, JDI/Sharp/Panasonic</li> | ||
| </ul> | ||
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